diff --git a/routers/web/repo/setting/setting.go b/routers/web/repo/setting/setting.go
index 04ff15e270..4d5fa93317 100644
--- a/routers/web/repo/setting/setting.go
+++ b/routers/web/repo/setting/setting.go
@@ -195,6 +195,7 @@ func SettingsPost(ctx *context.Context) {
 		}
 
 		federationRepos := strings.TrimSpace(form.FederationRepos)
+		federationRepos = strings.TrimSuffix(federationRepos, ";")
 
 		maxFederatedRepoStrLength := 2048
 		errs := validation.ValidateMaxLen(federationRepos, maxFederatedRepoStrLength, "federationRepos")